If you're looking for the perfect muffin top, rounded and without any ledge, here is the trick to achieving this.

Steps

1

Only beat the muffin mixture lightly. Over-beating the mixture causes the top to become pointy and the dough turns tough.

2

If greasing the muffin pan, only grease the base of each muffin hole and only take the greasing halfway up the sides. Leave the other half ungreased.

Don't use oil sprays. These can easily coat all of the hole and not just the base and halfway up.

3

Alternatively, use paper baking cups. Simply place them into each muffin hole in the muffin pan and spoon in the muffin mixture as usual.

4

Bake as per the recipe's instructions without any deviations. In particular, don't overfill each muffin hole. If you follow the recipe instructions carefully along with the above steps, you should find that the muffins produce a perfectly rounded top. If there are any problems, see How to troubleshoot muffins.